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(N0 Modeli) I 2 sheets sheet 1.

F. M'. LYNETT.

GRAIN CLEANER. No. 315,523 Patented Apr. 14;,- 1885.

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(No Model,) 2Sheets-Sheet F. M.-LYNETT.

GRAIN CLEANER. v No. 315,523. Patented Apr. 14, 1885.

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UNITE STATES PATENT OFFIC FREDERICK M. LYNEIT, OF TORONTQ-ONTARIO,CANADA.

GRAIN-CLEANER.

SPECIFICATION forming part of Letters Patent No. 315,523, dated April14, 1885.

Application filed August 29, 1884. (No model.) I

To all whom it may concern:

Be it known that I, FREDERICK M. LYNETT, of Toronto, in the county ofYork and Dominion of Canada, have invented certain new 5 and usefulImprovements in Grain-leaners,

of which the following is a specification.

' My invention relates to grain-cleaning inachinery; and it consists invarious features and details of construction, hereinafter fully setforth and claimed.

In the annexed drawings, Figure l is a perspective view of my improvedmachine; Fig. 2, a longitudinal vertical section of the same Figs. 3, 4,and 5, views illustrating details.

This apparatus is more especially intended for use in connection withother cleaning or separating machinery, and may form the shoe of awinnower, thrasher, or like machine, or may be used alone, as foundexpedient.

In the drawings I have represented it as a separate and independentmachine.

The general construction may be briefly stated as follows: A hollow drumor cylinder is formed of wire-screen material, perforated sheet metal,or any other suitable material of which screens and sieves are commonlymade, said cylinder being provided at each end with a strong hook orband to give form to and preserve the shape of the cylindrical body, andto travel upon supporting-rollers, by which the drum or cylinder issustained, the bands being grooved to receive the periphcries of therollers. The rollers are journaled in a frame which encompasses thecylinder, and which is provided with trunnions mounted in a fixed framein such manner that the first frame may be rocked or tipped to give thedrum any desired inclination to hasten or re tard the passage ofmaterials through it. One of the trunnions is furnished with ahand-lever by which to rock the frame, and said lever is in turnprovided with a locking stud or bolt, by which to hold the frame at anydesired adjustment. The inner wall of the cylinder is provided withspiral flights or wings, which form a conveyer to regulate the travel ofthe material through the cylinder, with buckets to lift the material tothe upper side and drop it, and with deflectors to spread the material5o thus dropped, the better to expose itto the a fan is provided,blowing preferably into the receiving end of the cylinder. This construction, together with the further details, may be more fully understoodupon referring to the action of the air, for the production of whichdrawings, in which A indicates a frame of any suitable and convenientconstruction, and which maybe a part or extension of the frame of athrasher or other grain cleaning, separat in g, or grading apparatus; B,a frame provided with trunnions a, which turnin bearings in forming acontinuation of said cylinder, as

shown in Fig. 2. The lateral portion or hoop groove, 01, to receive theedges of carrying or supporting rollers e, journaled in the pivoted"frame B, which rollers sustain the cylinder, maintain it in properposition, and enable it to rotate freely and with very slight friction.The-annular plate b gives stiffness to the hoop c and maintains thecylindrical form thereof, and consequently that of the drum or cylinder0. At its lower or discharge endthe cylinder O is furnished with a head,E, similar to head D, but having its hoop a made wider and furnished atintervals with openings f for the discharge of such matters ,as are toolarge to pass through the meshes or perforations of the cylinder-body,as shown in Fig. 2.

7 That portion of the hoop cof head E in which the openings f are madeis encircled by a band, F, having corresponding openings, g, said bandfitting sufficiently close to be held by friction in any position towhich it may be adjusted. By moving the band around the drum or cylinderthe openings y may be made to register with openings f, or the band maybe caused to cover more'or less of each of said c of head D is formedwith a circumferential openings f, so as to regulate the rate ofdischarge of the drum'or cylinder, the annular plate b of the head vEpreventing the material from tailing off, as it does in a common boltingreel or cylinder. h a I l As shown in Fig. 2, head E has its hoopprovided with a circumferential groove, (1, in the same manner exactlyas head D, to receive the supporting or carrying rollers e, journaled ormounted on axles in adjustable frame B.

The drum or cylinder may be formed of or covered with material ofuniform or of graded mesh, as required,'it being represented in thedrawings as graded, the finest material being of course at the receivingend.

YVithin the cylinder, and secured to its inner walls, as shown in Figs.1 and 2, are spiral flights or wings G, which form a conveyer orconveyers to insure the proper travel of the material through thecylinder from end to end, even when the cylinder is not inclineddownward toward the discharge end. At suitable points buckets H, Figs. 1and 2, are extended from one flight to the next, projecting inwardlyfrom the inner wall of the cylinder, and serving to lift the materialunder treatment from time to time and drop it from the upper side of thecylinder, in order that it may fall through an air-current produced by afan, I, or its equivalent, blowing preferably into the receiving end ofthe cylinder.

As shown in Figs. 1 and 2, I provide within and near the upper side ofthe cylinder one or more spreading or scattering plates, J, which aresupported by a rod or bar, K, projecting into the cylinder from across-bar, L, at one end of the swinging or adjustable frame B. Theplate or plates J areinclined downward to shed the grain or materialfreely, and are formed with radial ribs h, which divide the falling massinto smaller bodies and scatter it in different directions, so thatevery particle may be effectively acted upon by the air-current.

For the purpose of adj usting the cylinder to any desiredinclination,one of the trunnionsa is extended outward beyond the frameA,and is provided with a hand-lever, M, by which it may be easilytipped, said lever being either furnished with a locking dog or bolt toengage with a fixed rack.

I prefer, however, to make the lever itself elastic and capable ofspringing in a direction to and from the segment N, the lever in suchcase being furnished with a stud, z, to enter holes or notches j in thesegment N.

The lever M may be used simply as a locking device, and the cylindertipped or adjusted from the end, a suitable bail,O, being provided forthat purpose.

Motion may be imparted to the cylinder in any convenient manner, as bybelt passing around one of the hoops c, or a like hoop projecting fromplate I) of either band D or E. The plan illustrated in Fig. 3 is,however, preferred. This arrangement includes a toothed ring or band, P,encircling the cylinder near its mid-length, and meshing with a pinion,Q, having a miter-pinion, Q, formed upon it, the

whole turning upon an axle, k, on the swinging-frame B, and receivingmotion from agear or pinion, R, mounted and turning freely upon one ofthe trunnions a, which is extended for the purpose of carrying said gearor pinion, as seen in Fig. 8. The gear R is formed driven by belt fromany convenient source.

The fan may be fixed or carried by the swinging frame 13.

The material to be screened, graded, or cleaned enters by a spout orotherwise at the head of the cylinder, and passes from the head to thedischarge end at a rate controlled by the conveyer-blades and theinclination of the cylinder, the inclination being increased ordiminished according to the condition and quantity of the material.

In some cases it may be found desirable to dispense with the liftingaction of the blades or buckets H, and these may therefore be hinged toswing away from the inner wall of the cylinder, as shown in Fig. 4, ormade removable, as in Fig. 5, being made to slide in grooves and to fitthe same closely enough to prevent accidental displacement, or held byany convenient fastening, if desired.

I am aware that rotary screens have before been mounted uponsupporting-rollers, and that spiral blades and buckets have been usedwithin rotary screens, hence I make no general claim to such features.

I am aware of Patent No. 282,790, granted to Lewis T. Smith,August 7,1883, andImake no claim to anything therein.

Having thus described my invention,what I claim is 1. In combinationwith main frame A, having notched plate N, rocking-frame B, providedwith spring-lever M, having stud 1; to enter the notches of the plate,and screen 0, supported and adapted to rotate within frame B.

2. In combination with a rotary cylindrical screen, spiralconveyer-blades secured to the interior walls thereof, buckets extendingfrom one blade to another, stationary scatteringplates located withinthe cylinder and adapted to spread the material raised and depositedupon them by the buckets, and a fan ar= ranged, substantially asdescribed and shown, to produce a current of air through the cylinder.

3. In a screening apparatus, such as de scribed, the combination of arotary screening-cylinder having end plate, 1), partially closing thedischarge end of the cylinder, hoop 0, provided with outlets f,encircling-band F, provided with outlets g, and fan I, said parts beingconstructed and arranged substantially as shown and described,wherebythe material operated upon may be held for any desired length of timeunder the action of the'fan.

4. In combination with a stationary frame,

A, a rocking frame,- B, provided with a lator provided with aband-pulley, It, which is eral axle, k, and having trunnions ajournale'd scribed and shown, whereby the adjustment in said stationaryframe, a driving-wheel, R of the screen may be varied without changing10 R, journaled upon one of the trunnions a, a the position of the driing-wheel. 7

rotary cylindrical screen 0 provided with a 5 gear-ring P, andgear-wheel Q Q, mounted FREDERICK LYNETT' upon axle k, and serving totransmit motion Witnesses: from the driving-wheel R R to the screen,WILLIAM OOoigNon, the parts being arranged substantially as de- M. J.CONWAY.

